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Posted on Jan 02, 2017
Had the same problem on a few motherboards, check your capacitors very closely. If they are rounded or split on top they are bad. You can change the capacitors with new ones to fix your problem but it often ends up costing as much as buying a new board.
Posted on Nov 20, 2007
SOURCE: asus a8v deluxe mobo no start
This is a NO POST scenario
How to troubleshoot No POST
1. Check wall socket whether power is working fine
2. Check PSU (Power Supply Unit) fan whether it is rotating or not.
3. Change power socket.
4. Change the the main power cable from the wall socket to the PSU.
5. Check whether the lights on the keyboard flash when you turn on the power.
6. Check the voltage selector swicth at the back of the PSU ( Ideally should be 115v for US region and 220v for Asia ).
7. Check all peripherals like keyboard, mouse, video cable whether they are connected properly or not.
8. Open Chassis >> Check RAM connected properly.
9. Remove add-on cards like graphic cards, modem card, PCMCIA card slots, LAN card etc.
10. Take out main power connector (grey-black) or brown, green cable from front board panel of cabinet from where you turn on the power for CPU. and also take it out from the motherboard,
11. Check I/O cable which comes from power button on cabinet whether it is firmly connected nor not.
12. Plugg all the cables back in.
If still u face the same problem Then
13. Take out CMOS battery from motherboard and press power on/off button for 30 seconds and plugg CMOS battery back in to the motherboard.
ram chips swapped out with a known working chip of the same type
HDD swapped over with the HDD out of my portable external backup HDD
FLASHING A BIOS:
A couple of items are really important if you decide to flash. First. Make sure the updated bios addresses the issue you are trying to solve. eg many motherboard makers update their bios's for many different reasons. A reason may simply be to get a certain big name brand of pc to work correctly with a new cd writer big brand pc is selling.
So you really have to read the docs so see if the upgrade addresses your specific niggle or concern. Secondly, try your motherboard maker first to see if they have the files you need. Bios's upgrades are best had, if available, from the company that made your motherboard or pc. In most cases these are free.
Thirdly, READ THE DOCS CAREFULLY AND FOLLOW THEM TO THE LETTER. Dont skip any steps, especially the backup option if available. Fourth, if the upgrade calls for a clean bootdisk, use one. The disk I made especially for bios flashing is the one you can download above. It's a DrDOS bootdisk with NO drivers loading up in config.sys or autoexec.bat which is very important. My bios flash bootdisk is recommended by the most popular motherboad makers.
If you dont have a 1.44 drive I also created a utility to use to flash from a CD which you can add the new bios and flash utility to and then burn it.
It should have room to add your new bios, the flash utility, and also have room for the backup. If not one can always use another disk for the info. Always use BRAND NEW MEDIA when dealing with flashes.
In order to locate the correct bios upgrade for your motherboard you need to know who made it AND you need to know the model number. If your PC was made locally perhaps you have the manual. If not, then you need to find out the maker and model. Or, and very common with major brands, your computer maker will/may have the updated bios's on their website.
I have one windows and three dos utils that find your motherboard maker and model number. One of them should work for you. The DOS utils are on my DOStools Page under Diagnostics, and are called CTbios, MBID, and HW iNFO. The windows utility is called BIOS Agent and is on my Utilities Page under Hardware .
Once you ID your motherboard and model go the the manufacturers website and see what they have available. Note that some upgrades will come with their own bootdisk/utility so you may not need the disk I made.
Again, note that even tho many people flash their bios regularly to get the latest features and never have a problem, I still recommend it as a last resort as a flash gone bad will make your pc unusable if the backup doesn't work. Look at it this way, suppose I have a used 80 gig drive I want to resuse and my old P400 cant even detect it so I have an unusable pc. This is the best, and most common reason to flash.
On the other hand, if you have a more modern pc that cant see lets say a 180 gig drive and but all else is working properly then you may want to consider a PCI hard drive controller card which has an onboard bios that will see your new large hard drive and also come with 2 more IDE channels you can use in addition to the 2 channels you already have. This is safer than flashing the bios.
Posted on Jun 08, 2008
SOURCE: Au-31 mother baoards E machine
Tony, check and see if any of the capacitors are bulging or seeping brown stuff. Especially near hot places like the heatsink, or the memory.
This is a pretty common failure, and the only fix is to solder in new capacitors. Check here for more information.
Posted on Jul 16, 2008
SOURCE: A8S-X restart problems
Silver Dragon isn't thinking about the problem here. It is related to the BIOS Hanging. The System doesn't POST so how could it possibly be a program?
I have the same problem with a customer computer and after reading many posts on the internet, I have come to the conclusion that these motherboards (ASUS A8S-X) are junk.
I have been building PC's since 1986 when I opened my business and sold my first custome built 286-10 system.
There is something inherantly unstable ablout these motherboards and from what I can gather, the AI for the overclocking feature is on crack and doesn't properly set itself up so that it overclocks the CPU to the point it will not operate. Many people have tried many approaches to solve this problem, but none works consistantly. My suggestion is to call ASUS and tell them you've done some reading and by now they know the design is defective and you want a replacement or refund.
The reason you can post after a reset, is that the board returns to default settings and is then pretty much useless as you can not select with boot device to use or anyhting else that is BIOS-centric. The system hangs on restart and the only way to continue is to return to BIOS Default settings nulifying the entire set-up process. The most common errors I have found to be the BIOS Checksum error and the Overclocking error.
This Board Is A JOKE. ASUS should be ashamed of themselves. REALLY!
Posted on Aug 08, 2008
sounds to me like your mainboard is bad, i bet if you closely inspect the capacitors around the cpu one or more is bulged out or leaking
Posted on Feb 15, 2009
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